Installing parquet flooring - costs?

Hello everyone, I have a question regarding the pure installation costs for parquet. We are about to buy a house and would like to renovate the interior. This also includes a new floor in the form of parquet. We already have the material (oak) as it is old oak parquet from my parents' former house, which we have stored. This parquet was laid in a herringbone pattern. However, it should now be laid in a random row pattern. ;) Is that actually possible?!? Or do I have to keep the pattern for some reason? It is basically an area of about 95 sqm. The parquet probably also needs to be sanded and oiled and some boards freed from old glue. Can someone maybe tell me what costs we should expect?!? Or is it perhaps not financially worthwhile to use the old parquet at all?!? I would be very happy about answers. Thank you very much in advance :)

Hello,

real, old parquet is a fine thing; properly refurbished, it should be no problem to reuse it.

No one here will be able to tell you anything about the costs, since we neither know where you live nor whether you want to carry out the installation completely in [EL]. What should be certain, however, is that you will not be able to install underfloor heating beneath this parquet, as parquet from earlier years is not designed for that.

Rhenish greetings

Hello construction expert, first of all thank you very much for your answer. Yes, I see it the same way. It is a great material and it would be "stupid" from a design perspective not to use it. But the costs really give me a headache :) Maybe someone has experience with laying old parquet and could share it with me. We don’t have underfloor heating anyway ;) Also, we live in Ostwestfalen and don’t want to do anything ourselves regarding the floor :) That’s too risky for us... Best regards